32161042225 has 81 divisors (see below), whose sum is σ = 45128278179. Its totient is φ = 22725331200.

The previous prime is 32161042223. The next prime is 32161042241. The reversal of 32161042225 is 52224016123.

The square root of 32161042225 is 179335.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 31961215729 + 199826496 = 178777^2 + 14136^2 .

It is not a de Polignac number, because 32161042225 - 2¹ = 32161042223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32161042193 and 32161042202.

It is not an unprimeable number, because it can be changed into a prime (32161042223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 361359981 + ... + 361360069.

Almost surely, 2^32161042225 is an apocalyptic number.

32161042225 is the 179335-th square number.

32161042225 is the 89668-th centered octagonal number.

It is an amenable number.

32161042225 is a deficient number, since it is larger than the sum of its proper divisors (12967235954).

32161042225 is an equidigital number, since it uses as much as digits as its factorization.

32161042225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 32161042225 its reverse (52224016123), we get a palindrome (84385058348).

The spelling of 32161042225 in words is "thirty-two billion, one hundred sixty-one million, forty-two thousand, two hundred twenty-five".